Citazione Stile APA (7a Edizione)

Kopas, P. S. (2007). Taking the air: Ideas and change in Canada's national parks. UBC Press.

Citazione stile Chigago Style (17a edizione)

Kopas, Paul Sheldon. Taking the Air: Ideas and Change in Canada's National Parks. Vancouver: UBC Press, 2007.

Citatione MLA (9a ed.)

Kopas, Paul Sheldon. Taking the Air: Ideas and Change in Canada's National Parks. UBC Press, 2007.